Under Leaves Of Forest Flame Have Got Brown Dust Stuff On Them

Question

The leaves have fell off 1 plant and the flies were very attracted to the plants this year ?

Answer 1

There are several pests that can harm Pieris, including scales and fungus. We suggest you treat the plant with neem oil, removing any dead leaves and detritus from around the plant.

Here's a helpful article:
https://www.gardeningknowhow.com/ornamental/shrubs/japanese-andromeda/grow-japanese-andromeda.htm